A galvanometer of resistance 100 Ω has 50 divisions on its scale and has sensitivity of 20 μ A /division. It is to be converted to a voltmeter with…

A galvanometer of resistance $\displaystyle 100 \Omega$ has $\displaystyle 50$ divisions on its scale and has sensitivity of $\displaystyle 20 \mu \mathrm{~A}$/division. It is to be converted to a voltmeter with three ranges, of $\displaystyle 0-2 \mathrm{~V}$, $\displaystyle 0$-$\displaystyle 10$ V and $\displaystyle 0$-$\displaystyle 20$ V. The appropriate circuit to do so is :